CN219439569U - Lumbar spine inter-process fusion device - Google Patents
Lumbar spine inter-process fusion device Download PDFInfo
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- CN219439569U CN219439569U CN202222775342.3U CN202222775342U CN219439569U CN 219439569 U CN219439569 U CN 219439569U CN 202222775342 U CN202222775342 U CN 202222775342U CN 219439569 U CN219439569 U CN 219439569U
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Abstract
The utility model belongs to the technical field of medical appliances, and discloses a lumbar spine inter-spinous-process fusion device which is applied to the relative fixation of two adjacent lumbar spine processes and comprises a fusion device, wherein the upper end of the fusion device is provided with a first supporting part, the first supporting part is provided with first limiting wings positioned at two sides, and a first supporting groove for clamping one spinous process is formed between the first limiting wings at two sides; the lower end of the fusion device is provided with a second supporting part, the second supporting part is provided with second limiting wings positioned at two sides, and a second supporting groove for the other spinous process to be clamped in is formed between the second limiting wings at two sides; the surfaces of the first supporting part and the second supporting part are respectively provided with a first bone trabecula structure in a net shape. The utility model can be respectively clamped into the upper spinous process and the lower spinous process, further can realize effective support and fixation, has good stability, can support the growth of new bone formation through the high porosity of the surface of the bone trabecula structure, has better fusion performance, accelerates bone fusion, and has simple and practical overall structure.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to a lumbar interspinous fusion device.
Background
The vertebra of human body is formed from several vertebrae, its front thicker circular structure is a vertebrae, and its rear portion is a vertebrae tube, and its rear portion is equipped with a bony structure raised backward, called spinous process. In daily life, if the patients feel lumbago, backache and neck pain, the patients can feel the convex parts of bones with hands, namely the spinous processes. The spinous processes are not only superficial but also can be used for supporting the upper and lower parts, a plurality of ligaments are attached to the spinous processes, and interspinous ligaments and supraspinous ligaments are arranged on the spinous processes of the upper and lower sections, so that the spines of different sections can be connected.
Spinal disease results in serious pathology. These include abnormalities in vertebrae, intervertebral discs, facet joints, and connective tissue around the spine. These abnormalities may originate from a variety of causes, including mechanical injury or degenerative disc disease. These abnormalities can cause instability of the spine, which can cause the spine to become irregular and create micro-motion between adjacent vertebrae. The irregular and micro-motion of the spine may cause abrasion of the vertebral surface and eventually cause severe pain. Furthermore, these diseases are often chronic and progressively more problematic.
Existing available interspinous stabilization systems may be secured between adjacent spinous processes using a variety of different mechanisms. In addition, flexible ligaments or sutures may be placed around the implant and adjacent bone. However, there is a need to provide a more rigid and secure connection to the spinous processes. For example, a rigid connection is required to prevent the interspinous device from moving or sliding into an improper position. The existing spinous process stabilizing system is complex in structure, can be fixed only with the aid of screws, is poor in stability and is not beneficial to inducing fusion.
Disclosure of Invention
The utility model aims to provide a lumbar interspinous fusion device, which aims to solve the problem that the existing lumbar interspinous stabilization device needs to be fixed by screws and is not beneficial to induction fusion.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the lumbar spine inter-spinous-process fusion device is applied to the relative fixation of two adjacent lumbar spine processes and comprises a fusion device, wherein the upper end of the fusion device is provided with a first supporting part, the first supporting part is provided with first limiting wings positioned at two sides, and a first supporting groove for clamping one spinous process is formed between the first limiting wings at two sides;
the lower end of the fusion device is provided with a second supporting part, the second supporting part is provided with second limiting wings positioned at two sides, and a second supporting groove for the other spinous process to be clamped in is formed between the second limiting wings at two sides;
the surfaces of the first supporting part and the second supporting part are respectively provided with a first bone trabecula structure in a net shape.
In a possible implementation manner, the first supporting groove and the second supporting groove of the fusion device are communicated so that the inner side of the fusion device penetrates up and down.
In a possible implementation manner, the fusion device comprises a supporting frame made of titanium alloy, wherein the supporting frame is provided with two side wing frames positioned at two sides, the upper ends of the two side wing frames extend upwards to form the first limiting wing, and the lower ends of the two side wing frames extend downwards to form the second limiting wing; the first bone trabecular structure is disposed within the flanking frame.
In a possible implementation manner, the support frame further comprises a first guiding frame located at the front end and connected with the side wing frames at two sides, and a second bone trabecular structure is arranged on the inner side of the first guiding frame.
In a possible implementation manner, the first inducing frame comprises an inducing plate which is vertical and curved, a filling groove is formed on the inner side of the inducing plate, and the second bone trabecular structure is arranged in the filling groove.
In a possible implementation manner, the front side surface of the induction plate is a smooth curved surface, and the smooth curved surface is formed with an arc-shaped groove extending longitudinally.
In a possible implementation manner, the support frame further comprises a second guiding frame which is positioned at the rear end and connected with the side wing frames at two sides, and a third bone trabecular structure is arranged in the second guiding frame.
In a possible implementation manner, the top end of the first limiting wing is provided with an extension part extending towards the front end direction, and the extension part is of an arc-shaped structure.
In a possible implementation manner, the bottom of the second limiting wing is in an arc-shaped structure.
Compared with the prior art, the utility model has the following beneficial effects:
according to the lumbar interspinous fusion device, the upper spinous process and the lower spinous process can be respectively clamped in through the two supporting grooves formed by the first limiting wings and the second limiting wings on the left side and the right side, so that effective supporting and fixing can be realized, stability is good, and the growth of new bone formation can be supported through the high porosity of the surfaces of the first supporting part and the second supporting part, so that better fusion performance is achieved, bone fusion is accelerated, and the whole structure is simple and practical.
And the fusion device is of a frame structure as a whole, is formed by 3D printing of titanium alloy materials, is provided with bone trabecula structures at the front, back, left and right, and has good biocompatibility and osteogenesis induction effect.
Meanwhile, the induction plate arranged at the front end can maintain the continuous stress of the spinous process to induce osteogenesis through the smooth curved surface of the front surface and the adaptation with the lumbar vertebra structure and the three-bone trabecular structure so as to improve the vascularization of newly generated bone tissues, thereby allowing rapid posterior fusion.
Drawings
Fig. 1 is a schematic structural view of an interspinous fusion device according to an embodiment of the disclosure;
fig. 2 is an elevation view of an interspinous fusion device of a lumbar in accordance with an embodiment of the present application;
fig. 3 is a schematic structural view of a support frame of an interspinous fusion device according to an embodiment of the disclosure;
fig. 4 is a schematic view illustrating an installation position of a lumbar interspinous fusion device according to an embodiment of the disclosure.
In the figure: 1-a support frame; 11-a side wing frame; 12-an induction plate; 13-a second induction framework; 2-a first trabecular bone structure; 3-a second trabecular bone structure; 4-third trabecular bone structure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The utility model is further described with reference to the drawings and specific examples.
Referring to fig. 1-4, an embodiment of the present application provides a lumbar interspinous fusion device, which is applied to the relative fixation of two adjacent lumbar spinous processes, and includes a fusion device, wherein the upper end of the fusion device is provided with a first supporting part, the first supporting part is provided with first limiting wings positioned at two sides, and a first supporting groove for clamping one spinous process is formed between the first limiting wings at two sides; the lower end of the fusion device is provided with a second supporting part, the second supporting part is provided with second limiting wings positioned at two sides, and a second supporting groove for the other spinous process to be clamped in is formed between the second limiting wings at two sides.
The fusion device is used for supporting and fixing the upper and lower two adjacent spinous processes, specifically, the upper and lower spinous processes are clamped in through the first supporting groove and the second supporting groove on the first supporting part and the second supporting part, and the two limiting wings of each supporting part can play a limiting role, so that the spinous processes can be more stably limited, and further, better fixing and supporting effects are realized.
The surfaces of the first supporting part and the second supporting part are respectively provided with a first bone trabecular structure 2 which is in a net shape.
The bone trabecula is the extension part of bone cortex in cancellous bone, namely, the bone trabecula is connected with the bone cortex, and takes on an irregular three-dimensional reticular structure in a bone marrow cavity, such as a luffa-like or spongy shape, and plays a role in supporting hematopoietic tissues. The trabecular bone structure is similar to the trabecular bone structure, namely the trabecular bone-like structure, and the high porosity of the surface of the trabecular bone-like structure can support the growth of new bone formation, has better fusion property and accelerates bone fusion.
Through the technical scheme, the two supporting grooves formed by the first limiting wings and the second limiting wings on the left side and the right side can be respectively clamped in by the upper spinous process and the lower spinous process, so that effective support and fixation can be realized, the stability is good, and the growth of new bone formation can be supported by the high porosity of the surface of the first supporting part and the second supporting part through arranging the first bone trabecular structure 2 on the first supporting part and the second supporting part, so that the novel bone fusion accelerating device has better fusion performance, and the novel bone fusion accelerating device is simple in integral structure and practical.
In one embodiment, the first support groove and the second support groove of the cage are communicated so that the inner side of the cage is penetrated up and down.
Therefore, the inner side of the fusion device is hollow, the hollow structure can facilitate the upward and downward protruding spinous processes to be inserted into the first supporting groove and the second supporting groove, and the spinous processes can be inserted into the first supporting groove and the second supporting groove, so that the fusion device is better in bone structure adaptation, and the structural design is more reasonable.
In the embodiment of the application, the fusion device comprises a supporting frame 1 made of titanium alloy, wherein the supporting frame 1 is provided with two side wing frames 11 positioned on two sides, the upper ends of the two side wing frames 11 extend upwards to form the first limiting wing, and the lower ends of the two side wing frames 11 extend downwards to form the second limiting wing; the first trabecular bone structure 2 is disposed within the flanking frame 11.
The support frame 1 is made of a titanium alloy material which has good biological fusion and can accelerate bone fusion after implantation. The side wing frames 11 on both sides of the support frame 1, which make the cage constitute a first support part and a second support part, and have a first limit wing and a second limit wing. The first trabecular bone structure 2 may be disposed inside the side wing frame 11, so as to facilitate bone grafting fusion while supporting.
Further, for better posterior fusion, the support frame 1 further has a first guiding frame located at the front end and connected to the side wing frames 11 at both sides, and a second trabecular bone structure 3 is disposed at the inner side of the first guiding frame. In this way, posterior bone fusion may be facilitated by the second trabecular structure 3 of the first inducing framework.
Furthermore, in order to better match with the posterior lumbar vertebra structure, the first inducing frame comprises an upright and curved inducing plate 12, a filling groove is formed on the inner side of the inducing plate 12, and the second trabecular bone structure 3 is arranged in the filling groove.
Specifically, the front surface of the induction plate 12 is a smooth curved surface, and the smooth curved surface is formed with an arc-shaped slot extending longitudinally. The smooth curved surface of the front side of the inducing plate 12 eliminates potential cell growth, avoids adhesion to the delicate structures within the spinal canal, and the inducing plate 12 having the curved grooves can be matched to the lumbar structures.
In the embodiment of the present application, the support frame 1 further includes a second guiding frame 13 located at the rear end and connected to the side wing frames 11 at both sides, and a third trabecular bone structure 4 is disposed in the second guiding frame 13.
The second inducing framework 13 may facilitate fusion with nearby bone tissue via the third trabecular structure 4, further improving fusion.
Further, the top end of the first limiting wing is provided with an extending part extending towards the front end direction, and the extending part is of an arc-shaped structure. Such a configuration can be matched to the lumbar anatomy.
In a specific implementation process, the bottom of the second limiting wing is of an arc-shaped structure.
The lumbar interspinous fusion device provided by the embodiment of the application has the following effects:
the device can be formed by 3D printing of titanium alloy materials. The appearance and the internal structure of the instrument produced by 3D printing are not limited by the traditional design, and the porous titanium and titanium alloy medical instrument can be manufactured, so that the instrument has better biomechanical adaptation and structure weight reduction, and has better osteogenesis induction and bone integration performance through a surface porous structure. The lumbar articular process fusion device disclosed by the utility model realizes a good mechanical support function by utilizing the flexibility of a 3D printing process and the mechanical adaptation of human bones, has a hollow grid-shaped design on the left surface and the right surface, has a large bone grafting space and is favorable for bone fusion. Furthermore, the fusion device is convenient to hold and take, and can be realized by clamping two side planes.
Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The utility model provides a lumbar vertebrae interspinous fusion device, is applied to the relative fixation of two adjacent spinous processes of lumbar vertebrae, its characterized in that: the device comprises a fusion device, wherein the upper end of the fusion device is provided with a first supporting part, the first supporting part is provided with first limiting wings positioned at two sides, and a first supporting groove for clamping one spinous process is formed between the first limiting wings at two sides;
the lower end of the fusion device is provided with a second supporting part, the second supporting part is provided with second limiting wings positioned at two sides, and a second supporting groove for the other spinous process to be clamped in is formed between the second limiting wings at two sides;
the surfaces of the first supporting part and the second supporting part are respectively provided with a first bone trabecula structure (2) which is net-shaped.
2. An interspinous fusion device as recited in claim 1, wherein: the first supporting groove and the second supporting groove of the fusion device are communicated, so that the inner side of the fusion device is communicated up and down.
3. An interspinous fusion device as recited in claim 2, wherein: the fusion device comprises a supporting frame (1) made of titanium alloy, wherein the supporting frame (1) is provided with two side wing frames (11) positioned at two sides, the upper ends of the two side wing frames (11) extend upwards to form the first limiting wings, and the lower ends of the two side wing frames (11) extend downwards to form the second limiting wings; the first bone trabecular structure (2) is arranged in the flank frame (11).
4. A lumbar interspinous fusion device as recited in claim 3, wherein: the support frame (1) is also provided with a first induction frame which is positioned at the front end and connected with the side wing frames (11) at the two sides, and a second bone trabecula structure (3) is arranged at the inner side of the first induction frame.
5. An interspinous fusion device as recited in claim 4, wherein: the first inducing frame comprises an inducing plate (12) which is vertical and curved, a filling groove is formed in the inner side of the inducing plate (12), and the second bone trabecula structure (3) is arranged in the filling groove.
6. An interspinous fusion device as recited in claim 5, wherein: the front side surface of the induction plate (12) is a smooth curved surface, and the smooth curved surface is provided with an arc-shaped groove extending longitudinally.
7. An lumbar interspinous fusion device according to any one of claims 3-6, wherein: the support frame (1) further comprises a second induction frame (13) which is positioned at the rear end and connected with the side wing frames (11) at the two sides, and a third bone trabecula structure (4) is arranged in the second induction frame (13).
8. An interspinous fusion device as recited in claim 7, wherein: the top end of the first limiting wing is provided with an extending part extending towards the front end direction, and the extending part is of an arc-shaped structure.
9. An interspinous process fusion device as recited in claim 8, wherein: the bottom of the second limiting wing is of an arc-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222775342.3U CN219439569U (en) | 2022-10-20 | 2022-10-20 | Lumbar spine inter-process fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222775342.3U CN219439569U (en) | 2022-10-20 | 2022-10-20 | Lumbar spine inter-process fusion device |
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| Publication Number | Publication Date |
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| CN219439569U true CN219439569U (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222775342.3U Active CN219439569U (en) | 2022-10-20 | 2022-10-20 | Lumbar spine inter-process fusion device |
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